That version of form 8936, with those comments, has been around all year long. In the IRS instructions about EV credits it says that it is up to Congress to renew the EV credit and to check the latest law to verify that this has occurred before using the form to apply for a credit. I pointed out that comment on the form instructions and my tax preparer said that Congress did renew the EV credit when they passed this year's budget bill last year. I think it is quite possible that that did occur as the IRS has a tendency to update form 8936 each year around mid-February.
(I have some experience with this issue as this is the fourth time I have applied for the credit over the past 5 years. The form is always quite late in being revised for the tax year.)
I am pretty sure that if the EV credit was not approved for 2014 by Congress we would have heard about it in the news by now, considering how many EV's are being sold in the U.S. Also, I note that I still hear adds for electric cars stating that you will get a Federal tax credit of up to $7500 when you buy their brand of EV this year.
In any case, it is too late now. My tax return is off to the IRS with the rebate form attached. So I guess I will find out for sure in a few weeks. The worst that could happen is that I will get a bill for $2000 some day - after having the use of the government's money for free until then.