[ANNOUNCE] Weston 11.0 release schedule change

[Simon Ser]

Hi,

According to the previous schedule, a new Weston release is due today.
However, we've decided to push back the release. We'd want to merge a
few more bug fixes before the 11.0 release.

The new schedule is as follows:

- RC2: September 15th
- First possible release: September 22nd

As usual, we may do a RC3 if it turns out we need more time for fixes
and reviews.

Thanks,

Simon