Yeah, it may come suddenly, but it's time to say good bye to curly braces used as string indexing operator.
PHP-5.1 will issue an E_STRICT error, and PHP-6 will probably don't know this syntax any more.
I don't know why, but I've got some strange sentimental feelings :-) , maybe because I've never used those other brackets for string indexing...
So, beloved, I already miss you! :'(