1)The 103 anniversary of Titanic sinking was commemorated in Belfast with a traditional wreath laying ceremony and a moment of silence. According to the Belfast Telegraph, there were many international visitors present. The International Ice Patrol held its yearly memorial service as well and dropped a wreath from a plane over the spot where Titanic sank.
Sources:
1. Titanic Memorial Service At Belfast City Hall Marks 103rd Anniversary Of Sinking(15 April 2015,Belfast Telegraph)
2. Coast Guard International Ice Patrol Commemorates Sinking Of Titanic(15 April 2015, Military.com)

2)30 James Street (Albion House) which once housed the White Star Line offices in Liverpool, had special tribute dinner that included many connected to Titanic. The descendents of Carpathia captain Arthur Rostron were amongst those present at the dinner. All 63 rooms of the Titanic themed hotel were opened and those who had proven connections were given a free overnight stay. The hotel has received favorable reviews on several online review sites.
Source: Titanic Sinking Anniversary Marked At Tribute Evening(15 April 2015,Liverpool Echo)

3) Father Thomas Byles perished on Titanic remaining aboard to pray with fellow passengers. There is a call to have him proclaimed a martyr of the church, the first step towards possible sainthood. Father Graham Smith calls him “an extraordinary man who gave his life for others.”
Source:Titanic Priest Father Thomas Byles ‘Should Be Sainted’(12 April 2015,BBC)

4)After being fully restored by the Nomadic Charitable Trust,the last remaining ship of the White Star Line has been transferred to Titanic Belfast. The Nomadic was used to ferry passengers in Cherbourg, France to Titanic.  After its use with White Star ended, the former ferry ended up as a restaurant and then left to rot before being brought to Belfast to be restored. Though open for the past two years, it now is formally part of Titanic Belfast.
Source:Titanic Belfast Takes Over SS Nomadic(9 April 2015,BBC)

5)The Peoria Riverfront Museum has secured Titanic:The Artifact Exhbition as an exhibit in 2016. It will run from 12 Nov 2016 until March 2017.
Source: Peoria Riverfront Museum Secures Titanic Exhibit For 2016 (13 April 2015, Journal Star)

6)Barrie Clarke solved a mystery of where some Titanic headstones came from. When Halifax decide to replace a stone marker, they could not identify where it came from. Enter Clarke, a professor at Dalhousie University, who decided to play a sleuth. His journey to find the quarry was not easy since many closed long ago. Eventually he found it and testing proved the granite matched the headstones in Halifax .
Source: Titanic Gravestone Mystery Led To Five Year Search(22 April 2015,CBC)