According to Airfleets, Jet2 are due to receive 8 Airbus A321's in January 2020 :
Serial no. Former Reg.
Ex Thomas Cook UK
6038 G- TCDD
6056 G- TCDE
6059 G- TCVC*
6122 G- TCDG
6126 G- TCVD*
6376 G- TCDP
Ex Condor
6639 D- ATCD
6979 D- ATCE
* Serial nos, 6059 & 6126 are 321-231 Type - The rest being 321-211
Source (Airfleets.net):
https://www.airfleets.net/flottecie/...laned-a321.htm