The overall design although complex many parts such as the rear wings are a carryover from last year, but then this is a rendering, more changes in testing.
Notice the Haas clearly uses the entire 5 degree allowance for the exhaust and a more aggressively angled gearbox cover, effectively minimising the lose of the monkey seat.(Well they can't be placed behind the exhaust anymore, but this rule also is part of the reason that opened up to the use of lower T-wing) The shark fin also comes much further away from the engine cover than intended due to Article 3.5.1c.
The biggest surprise is the side pods. Complex if not more than the Ferrari and the side impact structure is placed lower like Ferrari's last year's design but it is much clearer in this design as it is abruptly cut off unlike Ferrari's 2017 design which was smoothly countered and covered
Red arrow showing the side impact structure positioning and green arrow showing how it fit through
The side pod turning vanes (Well deflectors in this case now as they have been focusing on deflecting the air coming from the inner surface of Bargeboards and nose cone (Redbull last year still focused on making the air flow along the sidepods, while Haas and Ferrari focused on making the air flow above the sidepods). Although interesting is pretty much an efficient version to the more crude version they had last year.
They also reduced the size of the delta wings(The wings attached to the nosecone), as the reshaped sidepod airflow conditioners is now higher than last years sidepod intake. (Moved it from the speculation thread)