52 now and just lost my sister in law aged 47

. Really focused on saving to 60 retirement but now thinking of dropping a day at work as nothing is guaranteed. Think we'll still manage to quit at 60 or worst case take bits of temp work.
Was planning on starting two sips and putting in an initial lump sum £500 each for the next 8 years to add to our final salary scheme however the cash isa rumours are making me think I should perhaps max out these this year.
Has anyone looked into the cash isa predictions. If she announced it in July will we still have the remainder of this year to throw in 20k or will it be immediate?