unlikely .... I have the GM installed right now and its just the same ones that they have been giving us forever now. The new ones they did release are bad (IMHO). There is a "buy more tones" feature but it takes you to ring tones not text tones. I wish they would sell more text tones... but as for now... looks like cydias the only way to get those.
Unless they're allowing ringtones as text tones... but thats kinda awkward.