A date for the swap has not yet been given ... that would be communicated at the appropriate time ...

I also wonder if some people do read or do you read and do not understand? Everything is stated in the WP ...

Below is an extract from the WP on this issue:

"BUZZCOIN 4.0
CHAIN SWAP

With  the  release  of  BUZZcoin  4.0  all  balances  
from  the  BUZZcoin  3.1.1  chain  will  be  immedi-
ately  available  1:1  on  the  BUZZcoin  4.0  chain.  
Please  note  that  this  chain  swap  and  core  up-
grade will be available to everyone.
Your  private  key  and  a  backup  of  your  current  
BUZZCoin   3.1.1   wallet.dat   will   be   required  
during the wallet update.
The BUZZcoin 4.0 wallet will offer a better user
experience  and  facilitate  additional  wallet  op-
erations.  Many  tasks  that  were  required  to  be  
done  manually  in  the  3.1.1  version  are  now  
done automatically. This new wallet is also built
to  interface  with  the  back-end  infrastructure  
constructed during Q2.
Along   with   the   BUZZcoin   4.0   release   it   is
planned  to  list  BUZZcoin  4.0  on  a  much  larger  
exchange  (we're  currently  in  negotiations)  as  
well  as  proceeding  with  the  listings  that  were  
not  possible  due  the  old  code  that  BUZZcoin  
3.1.1 was based on.
This  highly  anticipated  BUZZcoin  upgrade  will  
provide a much safer and stable network while
reinstating  higher  POS  rewards  after  the  first
wave of swapped coins have been burned."