Prepare front-door for Tech Preview

README.md

@@ -8,9 +8,53 @@ The Message Format Working Group (MFWG) is tasked with developing an industry st
 
 - [Why ICU MessageFormat Needs a Successor](docs/why_mf_next.md)
 - [Goals and Non-Goals](docs/goals.md)
-- [Record of Consensus Decisions](docs/consensus_decisions.md)
 
-## MessageFormat 2 Draft Syntax
+## MessageFormat 2 Technical Preview
+
+The MessageFormat 2 specification is a new part of
+the [LDML](https://www.unicode.org/reports/tr35/) specification.
+This specification is initially released as a "Tech Preview", 
+which means that the stability policy is not in effect and feedback from
+users and implementers might result in changes to the syntax, data model,
+functions, or other normative aspects of MessageFormat 2.
+Such changes are expected to be minor and, to the extent possible,
+to be compatible with what is defined in the Tech Preview.
+
+The MFWG welcomes any and all feedback, including bugs reports, implementation
+reports, success stories, feature requests, requests for clarification, 
+or anything that would be helpful in stabilizing the specification and
+promoting widespread adoption.
+
+The MFWG specifically requests feedback on the following issues:
+- How best to define value resolution [#678](https://github.com/unicode-org/message-format-wg/issues/678)
+- How to perform non-integer exact number selection [#675](https://github.com/unicode-org/message-format-wg/issues/675)
+- Whether `markup` should support additional spaces [#650](https://github.com/unicode-org/message-format-wg/issues/650)
+- Whether "attribute-like" behavior is needed and what form it should take [#642](https://github.com/unicode-org/message-format-wg/issues/642)
+- Whether to relax constraints on complex message start [#610](https://github.com/unicode-org/message-format-wg/issues/610)
+- Whether omitting the `*` variant key should be permitted [#603](https://github.com/unicode-org/message-format-wg/issues/603)
+
+## What is MessageFormat 2?
+
+Software needs to construct messages that incorporate various pieces of information. 
+The complexities of the world's languages make this challenging.
+MessageFormat 2 defines the data model, syntax, processing, and conformance requirements 
+for the next generation of dynamic messages. 
+It is intended for adoption by programming languages, software libraries, and software localization tooling.
+It enables the integration of internationalization APIs (such as date or number formats),
+and grammatical matching (such as plurals or genders). 
+It is extensible, allowing software developers to create formatting
+or message selection logic that add on to the core capabilities.
+Its data model provides a means of representing existing syntaxes,
+thus enabling gradual adoption by users of older formatting systems.
+
+The goal is to allow developers and translators to create natural-sounding, grammatically-correct,
+user interfaces that can appear in any language and support the needs of diverse cultures.
+
+## MessageFormat 2 Specification and Syntax
+
+The current specification starts [here](spec/README.md) and may have changed since the publication
+of the Tech Preview version.
+The Tech Preview specification is [here](tr35-messageformat.md) (link to follow).
 
 The current draft syntax for defining messages can be found in [spec/syntax.md](./spec/syntax.md).
 The syntax is formally described in [ABNF](spec/message.abnf).
@@ -59,6 +103,8 @@ See more examples and the formal definition of the grammar in [spec/syntax.md](.
 
 ## Sharing Feedback
 
+Technical Preview Feedback: [file an issue here](https://github.com/unicode-org/message-format-wg/issues/new?labels=Preview-Feedback&projects=&template=tech-preview-feedback.md&title=%5BFEEDBACK%5D+)
+
 We invite feedback about the current syntax draft, as well as the real-life use-cases, requirements, tooling, runtime APIs, localization workflows, and other topics.
 
 - General questions and thoughts → [post a discussion thread](https://github.com/unicode-org/message-format-wg/discussions).