SEISS rounds 4 and 5

[InMySpareTime]

It seems the next round of SEISS grants is now happening in April, I thought it would be March given the last rounds were late May, late August and early December.
Round 1 = late March-June (paid in May)
Round 2 = late June- September (paid in August)
/no income help Sept or Oct despite Tier 3 restrictions/
Round 3 = early Nov- End Jan (paid in December)

Round 4 = End Jan- End April (paid late April )

Putting the 4th grant in the 2021/2022 tax year to cover loss of earnings from 2020/2021 is really going to mess up my tax for next year too.
Anyone have an idea what the rationale is behind the grant timing?

Bump! I would like to know too! Why do we need to wait until May for money we needed in Feb? Also annoyed about missing 2 months last winter, that seems to have been brushed under the carpet

I've claimed my grant, and adding the 2019/20 tax year meant it was 20% higher than the last ones. I'm still a bit pissed off at the missing months last autumn, but I know deep down it's fruitless railing against it.
Anyone else claimed their Round 4 yet?