Will updating my iPhone's software delete purchased apps and songs?

I'm going to update my iPhone's 6.1.4 software to ios 7 when it is released in a few days. Some of my apps aren't available in the App Store anymore so will the update delete these apps off my phone?

No there shouldn't be a problem at all I did it and everything was good

What was causing the problem for me was the eBook "Alice in Wonderland" that comes with iBooks. Seems it was "purchased" on both my iPad and my iPhone, and thus not syncing properly. I deleted it from my library and tried "transfer purchases" again. It transferred the book, and the message went away.

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