As UK lists Covid-19 Delta AY.2.4 as Variant Under Investigation, how are vaccine companies preparing for escape mutations?

As UK lists Covid-19 Delta AY.2.4 as Variant Under Investigation, how are vaccine companies preparing for escape mutations?

The variant had been dubbed as Delta Plus by the UK Health Security Agency (UKHSA) and it is now called the VUI-21OCT-01.
Check the source here –Source, Financial Express.