docs: update readme for Q1 2020 (#18128)

Fixes #18091

Author: jelbourn

README.md

@@ -33,13 +33,16 @@ If you'd like to contribute, please follow our [contributing guidelines][contrib
 our [`help wanted`][help-wanted] label for a list of issues with good opportunities for
 contribution.
 
-## High level work planned for Q4 2019 (Oct  - Dec):
-* Remove dependency on HammerJS
-* Finish remaining test harnesses for Angular Material components
+## High level work planned for Q1 2020 (Jan - Mar):
+* Date-range picker
+* Finish remaining test harnesses for Angular Material components (four remaining as of January)
 * Continuing to create new, API-compatible versions of the Angular Material components backed by
-[MDC Web][] ([see @jelbourn's ng-conf talk](https://youtu.be/4EXQKP-Sihw?t=891)).
-* New `@angular/google-maps` package
-* New `@angular/cdk/clipboard` subpackage 
+[MDC Web][] ([see @jelbourn's ng-conf talk](https://youtu.be/4EXQKP-Sihw?t=891)). There are five
+remaining components to complete here as of January.
+* Add support for density configuration for the new components based on MDC Web.
+* Authoring benchmarks to collect performance metrics for Angular Material components. These
+benchmarks will live inside Google's internal code repository for the time being, but we should
+be able to publish the results.
 
 
 ## About the team