Create Sprint Table or Column with Dax

This is what I ended up going with.

My Sprints start on a Tuesday and are 2 week Sprints with 26 Sprints a year.

let
    StartDate = #date(2018, 1, 9),
    EndDate = Date.AddYears(Date.EndOfYear(DateTime.Date(DateTime.FixedLocalNow())),3),
    CurrentDate = DateTime.Date(DateTime.FixedLocalNow()),
    FirstSprint = 1,
    MaxSprint = 26,
    #"==SET PARAMETERS ABOVE==" = 1,
    #"==Build Date Column==" = #"==SET PARAMETERS ABOVE==",
    ListDates = List.Dates(StartDate, Number.From(EndDate - StartDate)+1, #duration(1,0,0,0)),
    #"Converted to Table" = Table.FromList(ListDates, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
    #"Renamed Columns as Date" = Table.RenameColumns(#"Converted to Table",{{"Column1", "Date"}}),
    #"Changed Type to Date" = Table.TransformColumnTypes(#"Renamed Columns as Date",{{"Date", type date}}),
    #"Added Days" = Table.AddColumn(#"Changed Type to Date", "Days", each [Date] - StartDate),
    #"Changed Type" = Table.TransformColumnTypes(#"Added Days",{{"Days", Int64.Type}}),
    #"Added SprintFromStart" = Table.AddColumn(#"Changed Type", "SprintFromStart", each Number.IntegerDivide([Days],14) + FirstSprint),
    #"Added Sprint" = Table.AddColumn(#"Added SprintFromStart", "Sprint", each if Number.IntegerDivide ( [SprintFromStart] , ( MaxSprint + 1) ) > 0 then [SprintFromStart] - ( MaxSprint * (( Number.RoundUp ( ( Number.IntegerDivide( [Days] , 14 ) + FirstSprint) / MaxSprint)) - 1)) else Number.IntegerDivide( [Days],14 ) + FirstSprint),
    #"Changed Type1" = Table.TransformColumnTypes(#"Added Sprint",{{"SprintFromStart", Int64.Type}, {"Sprint", Int64.Type}}),
    #"Added SprintName" = Table.AddColumn(#"Changed Type1", "SprintName", each if ([Sprint] = MaxSprint and Date.Month ([Date]) = 1) then Date.ToText(Date.AddYears([Date], -1), [Format="yyyy"])&"-"&Number.ToText([Sprint]) else Date.ToText([Date], [Format="yyyy"])&"-"&Number.ToText([Sprint])),
    #"Changed Type2" = Table.TransformColumnTypes(#"Added SprintName",{{"SprintName", type text}}),
    #"Added Sort" = Table.AddColumn(#"Changed Type2", "Sort", each if ([Sprint] = MaxSprint and Date.Month ([Date]) = 1) then Date.ToText(Date.AddYears([Date], -1), [Format="yyyy"])&Number.ToText([Sprint], "00")&Date.ToText([Date], [Format="dd"]) else Date.ToText([Date], [Format="yyyy"])&Number.ToText([Sprint], "00")&Date.ToText([Date], [Format="dd"])),
    #"Changed Type3" = Table.TransformColumnTypes(#"Added Sort",{{"Sort", Int64.Type}}),
    #"Removed Columns" = Table.RemoveColumns(#"Changed Type3",{"Days", "SprintFromStart"})
in
    #"Removed Columns"

 Not perfect, but works for me.