Microsoft has recently gone silent about windows phone developement, but hopefully it is changing now.
On Microsoft careers page one can find a particularly interesting advertisement. Reading it, you can notice that Microsoft is looking for a software engineer, there are however two interesting passages there:
(…)We work in small rapid releases, shipping several times per year.
(…)This is a great time to join as we’re completing our current release are getting ready for our next release targeting the holiday of this year and we’re chartered with keeping the momentum for Windows Phone by bringing new killer devices and delightful user experiences.
Those two quotes mean two things:
Firstly, we should expect quicker developement of both bug fixes and lesser wp builds.
And that the next big release for Windows Phone is aimed for release sometime around the holidays, which seems to be great news for all of us WP lovers!