new: text to speech in yellow popups (not in flashcards)
is swiping up and down on the flashcards to show/hide phrases also new?
Nope, that’s actually always been there 
I guess that’s an Easter egg :).
BTW I recommend adding a link to the quick howto video
from
http://www.lingq.com/iPhone_app/
and
http://www.lingq.com/iPhone_app/support