I have seen a korean video with the details of each new skill (i dont speak korean so this is only what i could see and understand):
Camel spin : increase the power of the base move (about 2.2 more powerfull) and add a last long range hit (very low power), now the skill is strong enough to be worth using and its a good skill to start a combo, as Iris only had somersault for that, the new camel spin is welcome.
Plasma saber : focus the power in a single hit and increase the range of the attack, also increase the charge speed by 30% (no increase in power, but the base skill is already very powerful with a power of 2500% at rank 5 and max charge)
New aerial skill : a slow but very poewerful two hit skill ( at rank 5 the total power is around 1900% / 2600% )
New ground skill : the power of this skill seems low at first ( around 500%/350% for the first hit then 100%/70% per wing's hit) but the wings hit all around you and deal a very good number of hits.
New passive : 5 sec invulnerability (60sec cooldown) when using right click.
I really like this new set of skills. Not everyone will use all of those skills but they have the merit of not all being focus on the same style, some are slow and powerful, and some bring mobility, speed or utility.