Images of what could be a Shattered Glass Flamewar toy showed up from a UK online store, and if it turns out to be legit, I will move it to a proper news topic.
(it is likely to be officially revealed at SDCC next week... as this online store was probably sent the new product images to be ready to list pre-orders on the day of the reveal, but shouldn't have leaked them yet)
Flamewar appears to be a redeco of the Legacy Arcee, done to homage a BotCon toy from way back in 2005... but like Slicer, the allegiance is wrong, or being placed in Shattered Glass is wrong, as the original Flamewar was a Decepticon in those colours, and yet as part of Shattered Glass it still has the same colour scheme. Granted, on some rare occasions there have been some Shattered Glass toys that had similar colours to the regular universe toy, but they still had something different about them to make it worth issuing a "new" toy for fans to collect a "new" toy.
This Flamewar also comes with a Battlemaster (Fireglide - a redeco of the Pteraxadon toy from Siege), which doesn't seem necessary other than to increase the price of this toy, as the original Flamewar toy had a crossbow, not an axe.
The original 2005 toy -
There was also a toy in 2012 in TFPrime, and all three times it has been a redeco of an earlier Arcee motorcycle toy.