I wouldn't get too excited about this until it's confirmed by Evergrey or Inside Out... many venues (Jaxx is notorious for this) put false shows on their itinerary... (anyone remember that Symphony X/Amon Amarth/Beyond the Embrace show Jaxx had on their website?)
I talked to Eric Corbin (PR guy for IOMA) at the Dream Theater/Queensryche/Fates Warning show in Pittsburgh... and he said they were bringing Evergrey over for a HEADLINING tour... specifically, he mentioned a Pittsburgh show at the Rex Theater (which would be amazing).... but you never know... maybe plans have changed