AppEngine's deprecation policy:
7.2 Deprecation Policy.
Google will announce if we intend to discontinue or make backwards incompatible changes to this API or Service. We will use commercially reasonable efforts to continue to operate that Service without these changes until the later of: (i) one year after the announcement or (ii) April 20, 2015, unless (as Google determines in its reasonable good faith judgment):
# required by law or third party relationship (including if there is a change in applicable law or relationship), or
# doing so could create a security risk or substantial economic or material technical burden.
[0] https://developers.google.com/appengine/terms scroll down to 7.2
This seems like a huge mistake. Why doesn't Google want to be the one place I can go for everything? They should be cultivating that kind of brand loyalty, not stomping all over it.