>>96292585
StD already ah da book this edition, so unless GW has some named guy planned you have 0% of seeing more in 4e.
I doubt they'd give them a mammoth, partially because woolly animals don't fit the vibe of half-naked people (so a normie elephant is more likely) and partially because, if they do get a behemoth, i doubt it will be a normal animal and not some Chaos mutant