It is expected a change in the bitcoin network, since the bitcoin was created, has a problem and is that the size of each block is a mega and this makes the speed of transactions is very slow and can only be done few Transactions per second worldwide, which causes transaction costs to increase a bit as well as confirmation times.
Some revisions to the protocol have been proposed for some years to make transactions faster, but none have been defined so far. So the next proposal is the Segwit2x, which tries to make the size of the block behave as if it were larger, and so allow more transactions, which would be fairly easy to implement without the majority of miners agree For the next 14 of July.
Today it is seen that 84% of the miners agree and most likely will make this change without complications. But if by July 30, this protocol has not yet been implemented, a bifurcation between "new" and "old" bitcoins will be created. Making us have our money divided into 2 networks, most likely being the 2x segwit taking the bitcoin reins.
Today, to protect us from this bifurcation we should have our bitcoins in a local wallet and if we are also scared about speculation that may be, we can change to another criptomoneda while making the change to the bitcoin protocol.
