On ~January 14, the Bitcoin Cash clients will (we expect huge adoption) switch to the new Cash Address address format.
Bech32 is the name of the address format proposed by Core developers (for SegWit addresses,BIP 173. It consists of 32 different characters, and "Bech" sounds like "Base" while keeping the error-correction algorithm "BCH" (or Bitcoin Cash ticker!) in mind. Bitcoin Cash will use a slightly different Bech32 address format, which is called "Cash Address".