API v1 Retirement : Final Dates
▻https://dev.twitter.com/blog/api-v1-retirement-final-dates
The Twitter REST API v1 will officially retire on Tuesday, May 7, 2013.
We will hold another blackout test on April 16, 2013 beginning at 23:00 UTC (4:00pm PDT). Depending on the results of that blackout test, we may announce an additional test before the final retirement date.
There’s a lot to keep track of in this migration …
Source: Twitter Developers - episod