Do "in future" and "in the future" imply different meanings?

Do in future and in the future imply different meanings? If so, using which one is grammatically correct?

Solution 1:

He would be more careful in future.
They plan on getting married in the near future.

In the first sentence, "in future" means "from now on"; the NOAD says its use is chiefly British.
In the second sentence, "in the future" means "the time or a period of time following the moment of speaking or writing."

Solution 2:

In future is how they say it in the UK and India. It is common and considered normal.

In future, we will avoid water beds.

In American English, In future sounds strange; in the future is preferred or at least will get you fewer strange looks.

Solution 3:

In future is commonly used in British English and is perfectly correct but has a different meaning than in the future.

In the future refers to an unspecified point in time, while in future means from now on.

It'a shame I missed you when I popped round to see you yesterday. I'll ring up beforehand in future.

In the future people will look back at the mobile phones we use today and laugh at their simplicity.

Solution 4:

You may see "in future" when "future" is modifying a noun for which "in" is an appropriate preposition.

Fore example:

in future ______

• shows
• plays
• events

and etc.

Solution 5:

In future is much more common in the UK and Ireland, as in In future, be more careful. In the US, we would tend to say In the future, be more careful. They mean exactly the same thing.