UPDATE 1-Apple CEO received liver transplant-report

* Analysts say Wall St. prepared for change in Jobs role

* Apple: Jobs looks forward to returning at end of June

(Adds investor comment, background, previous WASHINGTON)

By Gabriel Madway

SAN FRANCISCO, June 20 (Reuters) - Apple Inc Chief Executive Steve Jobs underwent a liver transplant operation about two months ago and is expected to return to work by the end of June, The Wall Street Journal reported on Saturday.

Jobs, a pancreatic cancer survivor, has been away on medical leave since January for an undisclosed condition.

An Apple (AAPL.O) spokesman did not confirm the Journal report but said, "Steve continues to look forward to returning to Apple at the end of June and there is nothing further to say."

The Journal, citing an unnamed source, said Jobs may return to work part-time at first.

Apple has been dogged for months by rumors about Jobs' health. Some shareholders in the past have complained about the company's lack of disclosure about the well-being of its CEO.