Seems to be the same as last year, though I haven't looked specifically-- basically, anyone with egg allergy Hx which is severe should contact their allergist to discuss it.
Split dosing seems to be losing fashion over time, since for most people who tolerate an intradermal skin test well, they have no real difficulty tolerating the full dose, either. It seems like allergists like to do a skin test though, before dosing someone with anaphylaxis Hx.
We did have to treat the flu jab about like an allergy injection, though-- caution about activity afterwards, stay in the office 40 minutes, etc.