Sadly BOB forum is going to retire. But the good news is SAP BO 4.3 now released.
https://blogs.sap.com/2020/06/13/sap-businessobjects-bi-4.3-sap-bi-4.3-released/
If anyone has tried new version, please let us know whether it is a stable version. Thanks.
summoner 
(BOB member since 2008-12-18)
Still evaluating the release but so far so good. Only 2 show stoppers so far :
unable to customize UI in InfoView, not included in this release
Issue with RestFul API and amending users
I’ve got an unsupported workaround for the first issue, still working my way through the second one. Due to the new front end we will need to update all of our documentation, we probably wouldn’t be deploying this version until next year.
FrustratedScot 
(BOB member since 2006-04-27)
There`s a few known limitations at the moment.
ABILtd (BOB member since 2006-02-08)
What are these ? We now have a third party managing our BO platform and they are keen to get us on to 4.3 by Sept, usually we wait a good few releases before upgrading so rather nervous and I need to do the regression testing and sign-off.
I got my hands on the upgraded 4.3 Webi in dev last week few things I noticed are,
1/ Objects now appear on right hand side of screen when editing / building a report (cant seem to change it)
2/ A lot of reports generate a new 4.3 error ERR_WIS_30374 saying the report needs to be resaved to improve performance.
I’m not bothered about admin side of things CMC etc the vendor deals with that more concerned around report functionality still working as expected.
To be honest I don’t like the new interface may be I’m getting old lol but I found the old one easier to navigate.
Rich 
(BOB member since 2002-10-04)
Some info here. loading... | SAP Help Portal
Yep, theyve changed the whole Webi UI, have a look at SAP Analytics Cloud and itll come clear why they`ve changed it!
ABILtd (BOB member since 2006-02-08)