The current estimate is that this will occur in approximately 60 days,
at the end of September. The 60 day window is a best-guess
approximation based on projections. It could conceivably happen
sooner.
Developers are encouraged to not only update their applications to use
a 64-bit integer (BIGINT/long long), but also verify that all
libraries they use are also prepared to handle 64-bit integers.
--
Marcel Molina
Twitter Platform Team
http://twitter.com/noradio