In the meantime, I've received an email from a few people asking how to comment on these proposals. You need to access 10/04473/FUL on the Lambeth Planning portal and click "submit comments". The developers submitted their new plans to Lambeth well before the 11th/12th Feb planning exhibition. On the Lambeth planning portal, the final date for comments is technically 11th February which makes the developers appear underhand. Apparently though, the development wasn't publicly advertised until recently so the official end date for comments is 21st February (in my view, Lambeth Council should amend the portal), but in reality submissions will be accepted until the development goes to the planning committee around April or maybe June.
Board #1 helpfully shows the totality of the site. It's a large piece of land and includes more than the 8 Albert Embankment frontage. Note that there's a small block that will be developed just the other side of the railway bridge: