Right now the plan is to debut Joe on that RAW but it was noted by The Wrestling Observer Newsletter that creative plans could change, but plans are in motion to bring Joe up. There was at least talk of having Joe defeat Finn Balor for the NXT Title and extend their feud, which would obviously delay his main roster call-up.
There has also been a lot of consideration lately to calling Sami Zayn to the main roster for a feud with Kevin Owens.
Regarding Balor, it does not look like he will be called up after WrestleMania as officials are still looking at him to be the face of the NXT brand past March.
Source: Wrestling Observer Newsletter
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