This was announced on social media by Jason Francis yesterday:

The ROKiT World Seniors Snooker Tour today announces two more opportunities for their tour players at Qualifying School next week in Reading.

The World Seniors Championship field has always been made up from legends of the sport, our former champions and qualifiers from open events staged for any player of any ability or gender over 40 years of age. There has also been rewards for continental champions from our World Snooker Federation regions.

With the continuing challenges of COVID-19, and in particular international travel, plus the fact many of our partners have not staged their Championships this season, it has been decided that four players, not two will progress from Qualifying School next week and take their place at the Crucible Theatre in May.

That event, which will be broadcast once again by the BBC, will play from the 6th – 9th May with Jimmy White defending champion. Thanks to an agreement with the World Snooker Tour lower ranked WPBSA tour players over 40 have also had the chance this season to receive invitations or qualification from the events.

Group stages at Qualifying School will be played from Monday 29th to Saturday 3rd April, two players each day will qualify to the finals day on Sunday 4th. In a change from the original format those 12 qualifiers will be drawn into 4 random groups of 3 with a round robin best of 7 providing four group winners. The final days play will be streamed live on the World Seniors Facebook Page.

The 2021 World Seniors Snooker Champion will take their place on the Champion of Champions Qualification list.

This is great news for all the players involved

Unfortunately, there is this as well

It’s a shame, and frankly I don’t understand WST stand on this in this particular case. Surely those two events are not in competition? I know it’s the rule, and I know some tour players might are in it, but certainly none of those invited in the CLS. A bit of flexibility wouldn’t hurt IMO.