The hugely popular characters are set to take a break from Walford later this year and will star in their very own drama series.
The exciting soap news was confirmed on Easter Saturday (4 April).
Life has been quite a rollercoaster for the on/off couple over the past few months, with actors Jessie Wallace and Shane Richie filming some harrowing storylines surrounding suicide and depression.
The couple have been estranged ever since Kat discovered that Alfie was responsible for the fire that left her badly burned.
But, thankfully, Kat and Alfie soon reunite and have the opportunity to put their past behind them in the new six-part series.
EastEnders Executive Producer Dominic Treadwell-Collins said in a statement: "In the next few weeks, viewers will witness several huge twists for Kat and Alfie Moon that will change their lives forever.
"Now is the perfect time to take two of EastEnders' most beloved and enduring characters out of their comfort zone as they head to Ireland to search for answers to some very big questions…"
BBC1 Controller Charlotte Moore added: "Life is anything but dull for favourite EastEnders couple Kat and Alfie as they embark on a new life in Ireland in this exciting drama series. Rest assured, their rollercoaster isn't set to end any time soon."
Speaking of their new drama, Shane, 51, said: "Both Jessie and I are absolutely thrilled to be given this amazing opportunity. To have a whole drama focused around Kat and Alfie is a huge honour for us both and we just can't wait to start filming."
Jessie Wallace, 43, added: "I have always loved working on EastEnders so when I heard of this new drama to take Kat and Alfie outside of Walford, I couldn't believe our luck. To be exploring the next chapter for Kat as well as working alongside my best mate, Shane, is a dream come true and a huge compliment."
Kat and Alfie's new drama series will consist of six hour long episodes and will start filming this autumn. It's due to transmit in 2016.
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