* Release notes for 2.0.0-preview2 version

* Apply suggestions from code review

Co-Authored-By: David Engel <dengel@magnitude.com>
Co-Authored-By: Karina Zhou <v-jizho2@microsoft.com>

Co-authored-by: David Engel <dengel@magnitude.com>
Co-authored-by: Karina Zhou <v-jizho2@microsoft.com>