The Radeon RX 5500 XT is nothing more than an RX 5500 with a wider release, according to multiple sources? The XT will share all its specifications with its non-XT sibling, although AIBs will offer it with up to 8 GB of GDDR6 VRAM, 4 GB more than the RX 5500 has. The RX 5500 XT is due to arrive on December 12 and is up for pre-order for 1,499 CNY (~US$213).
https://www.notebookcheck.net/AMD-Radeon-RX-5500-XT-Has-AMD-already-borked-its-midrange-Navi-offerings.446030.0.html