It is rather stronger and more specific than the normal way of wishing someone a good future, which might be something like "I wish you all the best for the future". It seems to be predicting that the other person will achieve great fame and success. "u" for "you" is a despised abbreviation that makes your writing look childish or illiterate.
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BarbaraPAI look forward to that day when the entire world shares in my knowledge of how amazing you are.Thanks Barbara.