Should I go with the Singleton Pattern or wait for 5.3?

Hello, I'm planning out a simple project and most probably I will need the functionality provided by the Singleton pattern. However with the next 5.3 release I would be able to conveniently use classes directly without instancing them. This would be a comparable option thanks to late state binding and the possibility to reference the class using a variable. What path do you suggest I should take? I can wait for the 5.3 release since I'm not in a hurry. I would like to hear your opinions in particular regarding the performance and code maintainability aspects. Thanks for your time.