From January 17, Boulton & Co - the blog run by Sky News political editor Boulton - will be transformed into a new weekday programme.
From 1pm to 2pm, Boulton will be joined by Sky News royal correspondent Sarah Hughes at the broadcaster's state-of-the-art Westminster studio for "forensic interviews and hard hitting debate on the day's breaking news stories".
Murnaghan will present a new Sunday morning programme from 10am to noon, starting on January 9. Titled Murnaghan, the show will offer a mix of "agenda-setting politics, business and sport with a focus on sharp interviewing and pithy opinion".
Sky said that the two shows will exploit the capability of its new high definition production resources, including side panels to display extra detail and information. There will also be the chance for viewers to engage with the debate online and via social networks.
"These shows see two of Sky's major talents in hugely exciting new programmes," said John Ryley, Head of Sky News.
"They will reinvent traditional formats, engaging with viewers via social media, and capitalising on all the benefits of HD. They will not only be must-sees for breaking news, but controversial debate and expert analysis."
Sky News has also appointed Paul Harrison as a new royal correspondent to work alongside Hughes and provide royal news in the run up to the marriage of Prince William and Kate Middleton in April.
News Of The World reporter Sophy Ridge will also join the Sky News team as a political correspondent, with a "strong presence" on the Sunrise programme.