because UAHF had happened today. and bitcoin cash announced they go anyway as an alt coin.
UAHF has NOT happened as yet... it does not happen until
12:20 MEAN TIME PAST (MTP)... that will be about the 6th block AFTER 12:20 UTC... it is currently ~0330 UTC... ~9 hrs to go until Hardfork:
https://cash.coin.dance/will the new transaction be on both (networks) btc and bcc?
New transactions AFTER the fork will NOT be on both networks, it is impossible due to Replay Attack Protection... Transactions BEFORE the fork will be on both networks (common block history)
do btc and bcc run on the same network?
No... they do not...
like can I make new transactions and still be able to split the bitcoins later to bcc and btc(send a transaction with forkid)?
or if I touch my bitcoins I won't be able to split them anymore?
Only if the coins are in addresses controlled by private keys that you own AT the time of the fork...
Ie.
Transactions BEFORE fork:
You have 1 BTC in 1AddressA (owned by you), you send 0.5 BTC to 1AddressB (owned by someone else) BEFORE the fork... fork happens, you now have 0.5 BTC in 1AddressA and will be able to get 0.5 BCC in 1AddressA in a BCC wallet.
Transactions AFTER fork:
You have 1 BTC in 1AddressA... you wait patiently... fork happens... you send 0.5 BTC to 1AddressB (owned by someone else) AFTER the fork... you now have 0.5 BTC in 1AddressA... and you will be able to get 1.0 BCC in 1AddressA in a BCC wallet.