This is one of the longest running unconfirmed rumours I think we've ever had with Transformers... we first heard about these waaaay back in December 13th, so it's been almost 6 months and we are still yet to see actual toys of all but Starscream.

Hopefully images come soon. At the very least we'll see them in two weeks time at BotCon.

According to BBTS, which can be out by a month either way...
Deluxe - August
Leader - June (I doubt Starscream will be out this month)
Voyager - July