Yep, that's what I've got at the moment (well, a variant of it) and so I'll go with that if nothing else crops up. The review is quite explicitly positive about said newcomers and so the ideal would be a less neutral term.
Thanks for all the further suggestions. I'd love to use tyros, but am not sure that it's really the right context. Showcaser is probably the closest to my request, but in the context of my review would be almost tautological. I think I will go with either Bafta's suggestion or newcomer. (The latter has a coincidental advantage for the review, although it's still not ideal.)