BlackBerry Z10: New reports of high return rates
Samsung Galaxy 4: Officially released Apr 26th, will be available in India May 4th
http://www.gottabemobile.com/2013/04/19/samsung-galaxy-s4-vs-samsung-galaxy-s3-5-things-to-know/ comparing S4 to S3
http://www.idigitaltimes.com/articles/16874/20130421/galaxy-s4-release-date-price-specs-samsung.htm official release dates, features and news
http://www.ciol.com/ciol/news/187340/samsung-galaxy-s4-launched-india Indian developments
iPhone 5: the iProduct that has damaged Apple stocks the most and is closely debated with Samsung
http://www.valuewalk.com/2013/04/apples-iphone5-successor-to-be-released-in-june-munster/ talk of iPhone’s new development
http://www.indianexpress.com/news/iphone5-sales-fallout-goldman-sachs-takes-apple-stock-off-preferred-list/1097062/ losing stock value
Misc.: articles that overlap products, usually in competition
http://www.nationalledger.com/lifestyle-home-family/samsung-galaxy-s4-and-apple-421459.shtml#.UXVFC7WThSI Galaxy S4 vs iPhone 5 based on Twitter reviews
http://newyork.newsday.com/business/technology/aapl-iphone-slump-samsung-competition-drops-apple-quarterly-profit-for-first-time-since-2003-1.5116950 Samsung overtaking the market