Word is they aren't gonna be brought into official rules until 2016. I'd say keep them.
One of the designers, Frank Brooks, said two weeks ago at the Nova Squadron Open that the new damage deck will be required for tournaments starting Jan. 1. You can hear it straight from his own mouth in this Nova Squadron podcast: http://novasquadronradio.com/episode-32-the-nova-open-2015/
His interview begins at the 3:44:55 mark and he mentions the damage deck bit at about 3:48:30.