I'll be there in 2-3 weeks for a job, so I'll have my smartphone camera on the ready when I go through there, unless someone beats me to it.
Someone already beat you to it...

Alex and I drove it last Saturday, and I-555 is fully signed in both directions up to AR 91 (Exit 49) now, sans any reference to U.S. 63...

Confirming marker posted along northbound ahead of AR 226 west (Exit 46). Taken 05/07/2022.

AR 91 west at the ramp to I-555 south. Taken 05/07/2022.
Heading south on U.S. 63 there is a JCT for I-555 ahead of the interchange with AR 91.