The world's tallest man

In today's "Today" newspaper, there was an article on the world's tallest man and his visit to Singapore. Here's a couple of lines from the article:

"The two men [Mr Muhammad Riyaz (2.34m) and Mr Azad Khan Mahsood (2.39m)] ... are touring the world before heading for London, where MrAzad is to supply updated information for his entry in the Guinness Book of World Records"

Um, "updated information"? What could have changed since his last update? I mean, he's in his 30s or 40s and his height shouldn't have changed in the past 15 years, is still Pakistani, still male, still alive.

They're tall, but not the tallest ever. Robert Wadlow, at 8' 11'', stood over 2" taller than me!