Aaj kal and aajkal have two different meanings. While aaj kal is a reference to today & tomorrow, aajkal means now-a-days. I am sure Imtiaz Ali has handled both meanings, aaj kal and aajkal.
Here’s the dope on the movie. It begins with Saif and Deepika being in love with each other. But love is not what can keeo them together. They are ambitious genX youth who have ambitions which are of higher priority than love. So, taking a totally practical approach they part ways seeking their own paths. That’s love aaj for you, the frivolous love of today’s times.
Rishi Kapoor, who plays Saif’s dad, narrates his lovestory. So, while the lovestory is of Rishi, Saif plays it out. Hence we see the sardar get-up of Saif, who is the younger version of Rishi. His dad narrates how his was love-at-first-sight. The moment he saw her, he just flipped. That’s love kal for you, the love which drives people totally crazy and the love which makes them do anything for it.
Now that the comparison of aaj and kal is done, we are left with aajkal. Saif takes a leaf out of Rishi’s book and chases Deepika Padukone. He realizes how love is the stability that he has been looking for and that she is the one with whom he can be happy forever. That’s the love aajkal for you. Today, yesterday and the now-a-days…all find a place in this movie. I am just itching to watch it, you too watch out!